EP2505899A1 - Raccordement rapide pour conduits sous pression hydraulique - Google Patents

Raccordement rapide pour conduits sous pression hydraulique Download PDF

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Publication number
EP2505899A1
EP2505899A1 EP11160881A EP11160881A EP2505899A1 EP 2505899 A1 EP2505899 A1 EP 2505899A1 EP 11160881 A EP11160881 A EP 11160881A EP 11160881 A EP11160881 A EP 11160881A EP 2505899 A1 EP2505899 A1 EP 2505899A1
Authority
EP
European Patent Office
Prior art keywords
coupling
valve
opening
valve body
protection element
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP11160881A
Other languages
German (de)
English (en)
Other versions
EP2505899B1 (fr
Inventor
Jürgen Hartmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Voswinkel Entwicklungs und Verwaltungs GmbH and Co KG
Original Assignee
Voswinkel Entwicklungs und Verwaltungs GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Voswinkel Entwicklungs und Verwaltungs GmbH and Co KG filed Critical Voswinkel Entwicklungs und Verwaltungs GmbH and Co KG
Priority to EP13183345.1A priority Critical patent/EP2672161B1/fr
Priority to EP20110160881 priority patent/EP2505899B1/fr
Publication of EP2505899A1 publication Critical patent/EP2505899A1/fr
Application granted granted Critical
Publication of EP2505899B1 publication Critical patent/EP2505899B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L37/00—Couplings of the quick-acting type
    • F16L37/28—Couplings of the quick-acting type with fluid cut-off means
    • F16L37/30—Couplings of the quick-acting type with fluid cut-off means with fluid cut-off means in each of two pipe-end fittings
    • F16L37/32—Couplings of the quick-acting type with fluid cut-off means with fluid cut-off means in each of two pipe-end fittings at least one of two lift valves being opened automatically when the coupling is applied

Definitions

  • the present invention relates to a quick coupling for hydraulic pressure lines, consisting of two coupling parts, namely a plug part and a sleeve part, wherein the plug part with a plug shank under circumferentially sealing in the direction of a coupling axis in a receiving opening of the sleeve part can be inserted and the coupling parts in the mated Clutch position are releasably lockable via locking means, wherein each coupling part within a housing and an inner, extending through the housing flow channel has a closing valve with a closed position generated by spring force, each closing valve of an axially movable, having a ring seal valve body and a housing side, a flow opening enclosing valve seat for the valve-ring seal, and wherein the coupling of the coupling parts whose valve body are opposite and so on axial approaches to Anla ge get together that the closing valves automatically open when coupling each other by the valve body are moved from its closed position against the spring force axially into the respective
  • the present invention is therefore based on the object to provide a quick coupling of the generic type described above, which is also suitable for applications with high pressures, pressure pulsations and strong hydraulic currents.
  • a seal protection element is arranged such that when opening the Closing valve is initially moved in a first opening stroke of the valve body relative to the seal protection element until the ring seal is covered by a sleeve portion of the seal protection element circumferentially, only in a second opening stroke by common displacement of the valve body and the seal protection element, the closing valve is opened, wherein in the Locked coupling position of the coupling parts, the adjacent valve body by internal, limiting the respective valve opening limit stops are limited to an axial movement play of a maximum of 0.4 mm.
  • a second aspect of the invention lies in the fact that the locking means are formed as an outer screw, wherein the one coupling part, in particular the plug part carries an outer, rotatable cap screw, with an internal thread on an external thread of the other coupling part, in particular of Muffenteils, can be screwed on, wherein the threads are formed as a rectangular or trapezoidal thread, and wherein within the screw in the transition from the internal thread to a radially inwardly projecting and cooperating with a stepped approach of the coupling part for force transmission collar an oblique, cone-like reinforcement region is formed.
  • the locking means are designed for a very high holding force, so that they can withstand high pressures and strong pressure pulsations during operation, without damage or even a separation of the coupling parts would be feared.
  • Both aspects of the invention can be applied individually, independently of each other, but preferably in combination with one another.
  • a quick coupling 1 consists of two plug-in coupling parts, namely a plug part 2 and a sleeve part 4.
  • the plug part 2 can be inserted with a plug shank 6 under circumferential sealing in the direction of a coupling axis 8 in a receiving opening 10 of the sleeve part 4.
  • a peripheral seal 14 is disposed within the receiving opening 10 of the sleeve part 4 in an inner annular groove 12.
  • the two coupling parts 2, 4 are detachably lockable via locking means 16.
  • Each of the two coupling parts 2, 4 has, within a housing 18 and a flow channel 20 extending through the housing 18, a closing valve 22 with a closed position generated by spring force.
  • Each closing valve 22 consists of an axially movable valve body 24 and a housing-side, a flow opening enclosing the valve seat 26.
  • Each valve body 24 is formed as a valve cone, and each valve seat 26 is designed as a corresponding conical inner surface.
  • each valve body 24 is provided in the sealing area with an elastic ring seal 28 which in a corresponding Sealing chamber is held. In the closed position, the respective annular seal 28 comes in a sealing engagement within the associated valve seat 26. This is in particular on Fig. 3b and Fig. 4 directed.
  • the closing valves 22 of the two coupling parts 2, 4 are arranged and aligned within the housing 18 so that when plug coupling the coupling parts 2, 4, the valve body 24 are axially opposite each other and when mating so over axial lugs 30 come to rest against each other, that the closing valves 22 automatically open each other when coupling, by the axial displacement of the two housing 18, the valve body 24 are moved from their closed positions against the spring force axially into the respective housing 18 into a respective flow opening of the flow channel 20 opening opening position.
  • This opening position is in the Fig. 1, 2 . 7 and 8 as well as 12 and 13 respectively.
  • a seal protection element 32 is arranged such that when opening the closing valve 22 first in a first opening stroke of the valve body 24 is displaced relative to the seal protection element 32 (see the transition from Fig. 4 to Fig. 6 ) until the ring seal 28 is circumferentially covered by a sleeve portion 34 of the seal protection element 32. Only then is in a second opening stroke (see the transition from Fig. 6 to Fig. 8 ) is opened by mutual displacement of the valve body 24 together with the seal protection element 32, the closing valve 22.
  • the respective valve opening limiting end stops 36 are limited to an axial movement of maximum 0.4 mm.
  • the locking means 16 are formed as an outer screw, wherein the one coupling part, as shown in particular the plug part 2, on the outside of its housing 18 a coaxial, about the axis 8 rotatable cap screw 38 carries, with an internal thread 40 on an external thread 42 of the housing 18 of the other coupling part, in particular the sleeve part 4, can be screwed.
  • the threads 40, 42 are formed for a high load capacity as a rectangular or trapezoidal thread.
  • the screw is designed for a very high holding force, so that the quick coupling 1 according to the invention is suitable for high pressures.
  • the closing valves 22 of the two coupling parts 2, 4 are basically similar and formed almost mirror-symmetrical in the coupling position, apart from slight differences in the effective cross sections within the flow channels 20.
  • Each valve body 24 has, starting from its conical, the ring seal 28 having area on the Front approach 30 opposite side on a pin-shaped guide projection 50 which is guided axially displaceably in a corresponding guide opening 52 of the seal protection element 32.
  • a first closing spring 54 is arranged between each valve body 24 and the associated seal protection element 32.
  • a second closing spring 56 is disposed between the seal protection member 32 and an inner housing-side abutment 58. It is essential for the described function when opening the closing valves 22 that the first closing spring 54 generates a smaller spring force than the second closing spring 56.
  • each seal protection element 32 consists of a sleeve portion 34 having, front receiving portion 32a for the valve body 24 and a rear, in the opening direction, annular and slidably guided within the housing 18 guide portion 32b.
  • suitable flow openings for the hydraulic medium are formed (not labeled).
  • each stop element 60 simultaneously forms the abutment 58 for the second closing spring 56.
  • each stop element 60 is formed as an annular screw-in, which engages for its axial adjustability with an external thread in an internal thread of the housing 18. In this embodiment can thus by the two opposing adjustable stop members 60, the joint movement of both valve bodies 24 for the coupled position are set to exactly zero, so that the valve body 24 are held firmly in a blocking position.
  • the plug part 2 is also equipped with the previously described adjustable stop element 60.
  • the end stop 36 of the sleeve part 4 is formed by a fixed, rigidly connected to the housing 18 stop member 62.
  • this stop element 62 consists of a flange 64 with an axial, engaging in the housing 18 pipe socket 66 which is sealed by a seal 68 within the housing 18.
  • the pipe socket 66 also forms the abutment 58 for the closing spring 56 at the same time.
  • the screw 38 is locked in its screwed locking position with a securing element 72 against loosening.
  • This securing element 72 may advantageously be formed by a cotter pin or similar securing pin which is inserted through transverse openings 74 of the screw sleeve 38 and tangentially through a securing groove 76 of the housing 18 of the sleeve part 4 and is held in particular by spring force.
  • a dirt seal 78 is preferably arranged in an annular gap between the threaded sleeve 38 of the plug part 2 and the housing 18 of the sleeve part 4, which prevents penetration of dirt, in particular dust and the like, into the threaded area.
  • the quick coupling 1 according to the invention is advantageously suitable as a high-pressure coupling.
  • the invention is not limited to the illustrated and described embodiments, but also includes all the same in the context of the invention embodiments. It is expressly emphasized that the exemplary embodiments are not limited to all the features in combination, but rather each individual partial feature may also have an inventive meaning independently of all other partial features. Furthermore, the invention has hitherto not been limited to the combination of features defined in the respective independent claim, but may also be defined by any other combination of specific features of all individually disclosed individual features. This means that in principle virtually every individual feature of the respective independent claim can be omitted or replaced by at least one individual feature disclosed elsewhere in the application. In this respect, the claims are to be understood merely as a first formulation attempt for an invention.
EP20110160881 2011-04-01 2011-04-01 Raccordement rapide pour conduits sous pression hydraulique Active EP2505899B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP13183345.1A EP2672161B1 (fr) 2011-04-01 2011-04-01 Raccordement rapide pour conduits sous pression hydraulique
EP20110160881 EP2505899B1 (fr) 2011-04-01 2011-04-01 Raccordement rapide pour conduits sous pression hydraulique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20110160881 EP2505899B1 (fr) 2011-04-01 2011-04-01 Raccordement rapide pour conduits sous pression hydraulique

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP13183345.1A Division EP2672161B1 (fr) 2011-04-01 2011-04-01 Raccordement rapide pour conduits sous pression hydraulique
EP13183345.1 Division-Into 2013-09-06

Publications (2)

Publication Number Publication Date
EP2505899A1 true EP2505899A1 (fr) 2012-10-03
EP2505899B1 EP2505899B1 (fr) 2013-10-23

Family

ID=44260396

Family Applications (2)

Application Number Title Priority Date Filing Date
EP13183345.1A Active EP2672161B1 (fr) 2011-04-01 2011-04-01 Raccordement rapide pour conduits sous pression hydraulique
EP20110160881 Active EP2505899B1 (fr) 2011-04-01 2011-04-01 Raccordement rapide pour conduits sous pression hydraulique

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP13183345.1A Active EP2672161B1 (fr) 2011-04-01 2011-04-01 Raccordement rapide pour conduits sous pression hydraulique

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EP (2) EP2672161B1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2957810A1 (fr) * 2014-06-18 2015-12-23 Voswinkel Entwicklungs- und Verwaltungs-GmbH & Co. KG Pièce de raccord pour un raccord rapide pour des conduites hydrauliques à haute pression
GB2549287A (en) * 2016-04-11 2017-10-18 Self Energising Coupling Co Ltd Improved fluid coupling
CN114268071A (zh) * 2021-11-30 2022-04-01 百富非凡机电设备（昆山）有限公司 一种涂料残留防止接头
US11655924B2 (en) 2018-08-10 2023-05-23 Parker-Hannifin Corporation Quick disconnect coupling

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3348575A (en) * 1965-08-16 1967-10-24 Int Harvester Co Hydraulically actuatable fluid coupling
US3525361A (en) * 1967-12-11 1970-08-25 Weatherhead Co Quick disconnect coupling
DE3509371A1 (de) 1985-03-15 1986-09-18 Voswinkel Kg, 5882 Meinerzhagen Unter druck kuppelbare hydraulik-kupplung
EP0478495A2 (fr) * 1990-09-28 1992-04-01 Vsi Corporation Verrouillage pour un raccord hydraulique
DE19624365C1 (de) * 1996-06-19 1997-10-23 Voswinkel Gmbh Kupplungsteil einer Druckmittel-Steckkupplung
DE9422115U1 (de) * 1993-04-20 1998-02-19 Voswinkel Kg Hydraulik-Steckkupplung
EP1355100A2 (fr) * 2002-04-15 2003-10-22 Voss Automotive GmbH Raccord enfichable pour système fluidique
DE10349299A1 (de) * 2002-10-25 2004-06-03 Nitto Kohki Co., Ltd. Strömungsmittelkupplung
GB2412956A (en) * 2004-04-05 2005-10-12 Fmc Kongsberg Subsea As Protection of seal elements
US20100034580A1 (en) * 2006-12-13 2010-02-11 Ernst Bernhard Quick connect coupling for connecting hdraulic lines, especially in earth moving machines, and the interchangeable add-on devices and tools thereof
CN101666403A (zh) * 2004-04-22 2010-03-10 斯瓦戈洛克公司 通过转矩上紧

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3348575A (en) * 1965-08-16 1967-10-24 Int Harvester Co Hydraulically actuatable fluid coupling
US3525361A (en) * 1967-12-11 1970-08-25 Weatherhead Co Quick disconnect coupling
DE3509371A1 (de) 1985-03-15 1986-09-18 Voswinkel Kg, 5882 Meinerzhagen Unter druck kuppelbare hydraulik-kupplung
EP0478495A2 (fr) * 1990-09-28 1992-04-01 Vsi Corporation Verrouillage pour un raccord hydraulique
DE9422115U1 (de) * 1993-04-20 1998-02-19 Voswinkel Kg Hydraulik-Steckkupplung
DE19624365C1 (de) * 1996-06-19 1997-10-23 Voswinkel Gmbh Kupplungsteil einer Druckmittel-Steckkupplung
EP1355100A2 (fr) * 2002-04-15 2003-10-22 Voss Automotive GmbH Raccord enfichable pour système fluidique
DE10349299A1 (de) * 2002-10-25 2004-06-03 Nitto Kohki Co., Ltd. Strömungsmittelkupplung
GB2412956A (en) * 2004-04-05 2005-10-12 Fmc Kongsberg Subsea As Protection of seal elements
CN101666403A (zh) * 2004-04-22 2010-03-10 斯瓦戈洛克公司 通过转矩上紧
US20100034580A1 (en) * 2006-12-13 2010-02-11 Ernst Bernhard Quick connect coupling for connecting hdraulic lines, especially in earth moving machines, and the interchangeable add-on devices and tools thereof

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2957810A1 (fr) * 2014-06-18 2015-12-23 Voswinkel Entwicklungs- und Verwaltungs-GmbH & Co. KG Pièce de raccord pour un raccord rapide pour des conduites hydrauliques à haute pression
US9664319B2 (en) 2014-06-18 2017-05-30 U.M. Gewerbeimmobilien Gmbh & Co. Kg Coupling part for a quick-release coupling for high-pressure hydraulic lines
GB2549287A (en) * 2016-04-11 2017-10-18 Self Energising Coupling Co Ltd Improved fluid coupling
GB2549287B (en) * 2016-04-11 2019-07-24 Self Energising Coupling Co Ltd Fluid coupling with cam and follower controlled securing means
US10865928B2 (en) 2016-04-11 2020-12-15 Self Energising Coupling Company Limited Fluid coupling
US11655924B2 (en) 2018-08-10 2023-05-23 Parker-Hannifin Corporation Quick disconnect coupling
CN114268071A (zh) * 2021-11-30 2022-04-01 百富非凡机电设备（昆山）有限公司 一种涂料残留防止接头

Also Published As

Publication number Publication date
EP2505899B1 (fr) 2013-10-23
EP2672161B1 (fr) 2014-11-05
EP2672161A1 (fr) 2013-12-11

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